/* ===========================================================
 * JFreeChart : a free chart library for the Java(tm) platform
 * ===========================================================
 *
 * (C) Copyright 2000-2008, by Object Refinery Limited and Contributors.
 *
 * Project Info:  http://www.jfree.org/jfreechart/index.html
 *
 * This library is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation; either version 2.1 of the License, or
 * (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
 * License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
 * USA.
 *
 * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
 * in the United States and other countries.]
 *
 * -----------------------------
 * KeyedValueComparatorType.java
 * -----------------------------
 * (C) Copyright 2003-2008, by Object Refinery Limited.
 *
 * Original Author:  David Gilbert (for Object Refinery Limited);
 * Contributor(s):   -;
 *
 * Changes:
 * --------
 * 05-Mar-2003 : Version 1 (DG);
 *
 */

package net.droidsolutions.droidcharts.core.data;

/**
 * Used to indicate the type of a {@link KeyedValueComparator} : 'by key' or 'by
 * value'.
 */
public final class KeyedValueComparatorType {

	/** An object representing 'by key' sorting. */
	public static final KeyedValueComparatorType BY_KEY = new KeyedValueComparatorType(
			"KeyedValueComparatorType.BY_KEY");

	/** An object representing 'by value' sorting. */
	public static final KeyedValueComparatorType BY_VALUE = new KeyedValueComparatorType(
			"KeyedValueComparatorType.BY_VALUE");

	/** The name. */
	private String name;

	/**
	 * Private constructor.
	 * 
	 * @param name
	 *            the name.
	 */
	private KeyedValueComparatorType(String name) {
		this.name = name;
	}

	/**
	 * Returns a string representing the object.
	 * 
	 * @return The string.
	 */
	public String toString() {
		return this.name;
	}

	/**
	 * Returns <code>true</code> if this object is equal to the specified
	 * object, and <code>false</code> otherwise.
	 * 
	 * @param o
	 *            the other object.
	 * 
	 * @return A boolean.
	 */
	public boolean equals(Object o) {
		if (this == o) {
			return true;
		}
		if (!(o instanceof KeyedValueComparatorType)) {
			return false;
		}

		KeyedValueComparatorType type = (KeyedValueComparatorType) o;
		if (!this.name.equals(type.name)) {
			return false;
		}

		return true;
	}

	/**
	 * Returns a hash code.
	 * 
	 * @return A hash code.
	 */
	public int hashCode() {
		return this.name.hashCode();
	}
}
